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Posted

My apologies if this subject has been covered elsewhere - you are welcome to direct me to previous posts.

We have an MBC timber frame house sitting on the Kore insulated slab. The section drawing of how the house sits on the foundation is not entirely representative. Our slab is slightly oversize and so there is a step out of between 0 and 60mm on different walls. 

 

The foils from the timber frame and the red radon barrier needs to be tidied and we have to anticipate that moisture could get behind our final finish (brick slips on 50mm battens) and so needs carrying away. 

 

The anecdotal recommendation is to unpin the silver breathable membrane from the foot of the timber frame, insert a DPC and let that go over the lip and down on to the EPS. 

 

The red radon barrier is super stiff so won't sit nicely particularly where there are folds. I plan to cut that back. We don't have radon in our area. We learn that the foils can be cut back to end 25mm down the face of the EPS. We can then secure with render board or similar. 

 

My questions: is that what other people have done? how would you secure the render board? mechanical fasteners or glue or ??

 

Thank you in advance

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Screenshot 2025-03-19 at 13.21.58.png

Posted

I done the first linked thread.

 

I used stainless steel screws (Wide thread) and screwed the renderboard into the EPS. Worked a treat, just set your drill to a low torque setting. 

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